Tapu Koko @ Terrain Extender  
Ability: Electric Surge  
EVs: 252 HP / 4 SpA / 252 Spe  
Timid Nature  
- U-turn  
- Taunt  
- Thunderbolt  
- Roost  

Zekrom @ Dragonium Z  
Ability: Surge Surfer  
EVs: 72 HP / 252 Atk / 184 Spe  
Jolly Nature  
- Hone Claws  
- Outrage  
- Bolt Strike  
- Roost  

Jirachi @ Leftovers  
Ability: Unaware  
EVs: 252 HP / 4 Def / 252 SpD  
Sassy Nature  
- Stealth Rock  
- Skill Swap  
- Wish  
- Iron Head  

Mewtwo @ Mewtwonite Y  
Ability: Magic Bounce  
EVs: 208 HP / 48 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Calm Mind  
- Recover  
- Thunder  
- Psystrike  

Yveltal @ Leftovers  
Ability: Unaware  
EVs: 248 HP / 252 Def / 8 SpD  
Impish Nature  
- U-turn  
- Roost  
- Foul Play  
- Defog  

look familiar? (Groudon) @ Electric Seed  
Ability: Unburden  
EVs: 72 HP / 252 Atk / 184 Spe  
Jolly Nature  
- Swords Dance  
- Precipice Blades  
- Fire Blast  
- Thunder Punch